Mainstream class group data is shown separately from standard/year-group enrolment data. The source does not identify which standard/year group each class group belongs to.
Average class size
22.83
2025/26
Mainstream classes
6
2025/26
Largest class group
29
2025/26
Classes with 30+ pupils
0
2025/26
Class group metrics trend
Class group metrics by year
Year
Mainstream class pupils
Mainstream classes
Average class size
Largest class
Classes 30+
2006/07
120
5
24.00
30
1
2007/08
122
5
24.40
33
1
2008/09
121
5
24.20
32
1
2009/10
116
5
23.20
33
1
2010/11
111
5
22.20
30
1
2011/12
120
4
30.00
32
3
2012/13
119
5
23.80
32
2
2013/14
123
5
24.60
30
1
2014/15
119
5
23.80
29
0
2015/16
125
5
25.00
33
2
2016/17
121
5
24.20
34
1
2017/18
127
5
25.40
34
2
2019/20
138
5
27.60
38
2
2020/21
147
6
24.50
35
2
2021/22
140
6
23.33
29
0
2022/23
145
6
24.17
29
0
2023/24
142
6
23.67
30
2
2024/25
145
6
24.17
30
1
2025/26
137
6
22.83
29
0
Data highlights
Key numbers to spot outliers or notable changes.
Biggest gain in a single year: 2001/02: 99 in 2000/01 → 113, +14 pupils.
Biggest loss in a single year: 2025/26: 145 in 2024/25 → 137, -8 pupils.
Largest single-class increase: 5th Class in 2025/26 (10 → 26, +16).
Largest single-class decrease: 5th Class in 2024/25 (21 → 10, -11).
Largest cohort-step gain: 3rd → 4th in 2024/25 (23 → 26, +3).
Largest cohort-step loss: JI → SI in 2023/24 (23 → 19, -4).
Overall: 77 (1974/75) → 137 (2025/26), 60.
Summary statistics (class-level data)
Min / max / mean enrolment per class across the available final by-standard years.
Class
Min
Max
Mean
Years
Junior Infants
13
23
17.8
6
Senior Infants
14
20
18.2
6
1st Class
14
22
17.7
6
2nd Class
13
22
18.0
6
3rd Class
12
23
17.5
6
4th Class
12
26
18.8
6
5th Class
10
26
18.0
6
6th Class
10
20
16.7
6
Total
74
147
112.4
43
Total enrolment over time
Total and gender trends use historical records where available. Class-level data starts in 2020/21.
Enrolment by gender over time
Enrolment by class over time
Cohort progression
Track how each cohort (pupils who were in the same class in the same year) progresses through the school. Each step shows the count; the number between steps is the net change (pupils gained minus pupils lost).